Abstract
Objective
Combined metatarso-phalangeal and inter-phalangeal deformity represents about 1% of hallux valgus deformity, and its treatment remains a debated topic, because a single osteotomy does not entirely correct the deformity and double osteotomies are needed. The aim of this study is to review the results of 50 consecutive combined metatarso-phalangeal and inter-phalangeal hallux valgus treated by Akin proximal phalangeal osteotomy and SERI minimally invasive distal metatarsal osteotomy.
Material and Methods
Fifty feet in 27 patients, aged between 18 and 75 years (mean 42 years) affected by symptomatic hallux valgus without arthritis were included. Two 1-cm medial incisions were performed at the metatarsal neck and at proximal phalanx. Then SERI osteotomy was performed to correct metatarso-phalangeal deformity and Akin osteotomy was performed to correct interphalangeal deformity. Both osteotomies were fixed with a single K-wire. A gauze bandage of the forefoot was applied and immediate weight-bearing on hindfoot was allowed. K-wire was removed after 4 weeks. All patients were checked at a mean 4 year follow-up.
Results
All osteotomies healed. Delayed union of metatarsal osteotomy was observed in 1 foot. Slight stiffness was observed in 2 feet. Mean AOFAS score was 47±15 preoperatively and 91±9 at last follow-up. Radiographic findings revealed a significant improvement (p<0.005) of interphalangeal-angle (pre-op 17.5°, post-op 5.1°), hallux-valgus-angle (pre-op 30.1°, post-op 12.2°), inter-metatarsal-angle (pre-op 13.4°, post-op 7.1°), distal-metatarsal-articular-angle (pre-op 20.1°, post-op 8.2°).
Conclusions
The combined SERI-Akin double osteotomy was an useful procedure for correction of complex hallux valgus deformity. Clinical and radiographic findings showed an adequate correction of all parameters of the deformity.
